"I've got a picture of how I'd like this to work in my head, but I can't find any software out there that seems to go along with it. I'm a big fan of keeping things simple, so I'd like to start with high level overviews. Each step in the process would be a general statement like 'Look for valid traffic on the monitoring interface'. For those who already know what 'valid traffic' means, it's easy to follow. However, if there was someone who was unsure what it meant, there would be a link they could click on that would pop open a new window (or something similar) explaining in detail what we're looking for and how to find it.
What you do is start a local, specialized verion of Wikipeadia. So if you are hire to shoot squirrels you can read the general overview what it says "Aim your gun at a squirrel then shoot it" but if you click on "gun" to lland of the artical where it explains about a tube that shoots from one and and how to not point the shooting end at anything you don't want dead.
The nice thing about Wiki is that (1) The software is free and everyone knows how to use it and (2) your documents cn grow over time and stay up to date.
That said my bosses still like paper documents. They like a nice neat product that can be called "complete" and get approval signatures on it. But then I ask "have you ever seen anyone READ one of those documents?" It's a generational thing. But I really do thing a living hyper linked document is the only why to go. If you have control issue then you need some kind of revision control system hooked up to the Wiki. Those are available and not hard to use. You can have a working wiki and periodically turn over the "approved" version controlled Wiki to the public if you like to work that way.